The Co(2+) ion in the title compound, Rb[Co(C3H7NO3)(H2O)5][H6CoMo6O24]·C3H7NO3·10H2O, is coordinated by five water mol-ecules and one O-monodentate l-serine ligand in a slightly distorted octahedral geometry. The Rb(+) ion is irregularly coordinated by nine O atoms. In the crystal, the [H6Co(III)Mo6O24](3-) polyanions are stacked along the b-axis direction, mediated by bridging Rb-O bonds. N-H...

A new hyphenated method was developed for the speciation of Tl. In this method, Tl(III) was complexed with DTPA to form a Tl(III)-DTPA anionic complex. Tl(I) did not form a complex with DTPA. The two species were separated simultaneously by means of ion chromatography using a Dionex cation exchange guard column, CG12A, and 15 mmol/l nitric acid as eluant. When ICP-OES was used as detector the d...

aminocarboxylic acids, such as 2-aminobenzoic acid, react easily with [ir(cod)(pme3)3]cl, (cod=1,5-cyclooctadiene), in thf to produce hydridoaminocarboxylato iridium(iii) complexes in high yields. these octahedral complexes are formed via oxidative addition reaction of the o-h bond of the carboxylic group with the central metal. the starting iridium(i) complex losses the cod molecule, the chlor...

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Chemical reaction of [Ru(III)(acac)(2)(CH(3)CN)(2)]ClO(4) (1) with 2-methylthioaniline, HL(1) in ethanol under basic conditions yielded three new complexes Ru(II)(acac)(2)(L(1b)) (1b), (L(1b) = 4-imino-3-(methylsulfanyl)cyclohexa-2,5-dien-1-one), Ru(III)(acac)(2)(L(1c)) (1c), (HL(1c) = N-(2-methylthiophenyl)formamide) and (acac)(2)Ru(II)(μ-L(1d))Ru(II)(acac)(2) (1d), (L(1d) = 1,4-bis(2-methylth...

The present work investigated the performance of an isotropic (Liu–Jordan, L–J) and anisotropic (Hay) model in assessing solar energy potential Saudi Arabia. Three types collectors were considered: with southward fixed-tilt (mode (i)), tracking Sun (ii)), varying-tilt (iii)). This was first time such a study conducted for average annual difference between (L–J) estimates is least ≈38 kWhm−2 yea...

Group B streptococci (GBS; Streptococcus agalactiae) are the most common cause of neonatal sepsis and meningitis. Serotype-specific IgG antibody is known to protect neonates against GBS infections by promoting opsonophagocytosis. The L-ficolin-mediated lectin pathway of the complement is also a potential mechanism for opsonization of GBS, because L-ficolin activates the complement after binding...

Sir: As part of our continuous effort toward the discovery of novel enzyme inhibitors from microbial cultures1~3), we have searched for inhibitors against dipeptidyl aminopeptidases. We wish to report the discovery of acetyl-L-leucyl-L-argininal as a specific inhibitor against dipeptidyl aminopeptidase III (DAP-III, EC 3.4.14.4) from the culture filtrate of a bacterium (BMG520-yF2). Although th...

The homoditopic ligand 6,6'-[methylenebis(1-methyl-1H-benzimidazole-5,2-diyl)]bis(4-{2-[2-(2-methoxyethoxy)ethoxy]ethoxy}pyridine-2-carboxylic acid) (H(2)L(C2)) has been tailored to self-assemble with lanthanide ions (Ln(III)), which results in the formation of neutral bimetallic helicates with the overall composition [Ln(2)(L(C2))(3)] and also provides a versatile platform for further derivati...

background: in vitro model studies are becoming increasingly popular for experimental research designs. they include isolation and expansion of cells of a particular tissue, such as the nervous tissue which contributes to understanding the underlying mechanisms in many pathologies. it enables  the scrutinization of intracellular signaling pathways responsible for cell death. objectives: in the ...